Cutting down height of Al cased plastic knobs - neatly?

[N_Cook]

Or presumably plastic knobs also. Owner of Roland piano had a flight case
made up for it but he did not allow for the knobs. Hacking into the foam
still leaves the knobs pressed against the outside face of the case.
Replacement knobs not possible as would have to be only 8mm high and do not
exist that shallow.

How to mount in a lathe to cut down ? Cutting tool sufficiently sharp but
grip the knob in the jaws too tight and the Al of the knob deforms. Too
loose and it slips of course. Jubilee / hose clip around it and not enough
space between the jaws for the clip boss.
Nylon cable tie worked well enough to form a neat level line to then hand
hack saw / and bench-grind down to, but not enough force to fully lathe cut
the height down. Anyone been here before/ know the secret? for the next time
I'm confronted with the same predicament.
Perhaps an engineering solution, if an oft repeated job. A 5 to 10 mm thick
anulus of aluminium , with a radial cut and dimensions so a tight and
rigidly held grip in the lathe-juck.
Perhaps a smaller ground down boss structure of a jubille clip , for a more
general work-around, replacing the tightener with an Allen key grub screw
(hex set screw) to reduce the size.


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

 

[Smitty Two]

In article <guemd9$1pv$1@news.motzarella.org>,
"N_Cook" <diverse@tcp.co.uk> wrote:

Or presumably plastic knobs also. Owner of Roland piano had a flight case
made up for it but he did not allow for the knobs. Hacking into the foam
still leaves the knobs pressed against the outside face of the case.
Replacement knobs not possible as would have to be only 8mm high and do not
exist that shallow.

How to mount in a lathe to cut down ? Cutting tool sufficiently sharp but
grip the knob in the jaws too tight and the Al of the knob deforms. Too
loose and it slips of course. Jubilee / hose clip around it and not enough
space between the jaws for the clip boss.
Nylon cable tie worked well enough to form a neat level line to then hand
hack saw / and bench-grind down to, but not enough force to fully lathe cut
the height down. Anyone been here before/ know the secret? for the next time
I'm confronted with the same predicament.
Perhaps an engineering solution, if an oft repeated job. A 5 to 10 mm thick
anulus of aluminium , with a radial cut and dimensions so a tight and
rigidly held grip in the lathe-juck.
Perhaps a smaller ground down boss structure of a jubille clip , for a more
general work-around, replacing the tightener with an Allen key grub screw
(hex set screw) to reduce the size.

Your lathe needs collets instead of a chuck.

 

[N_Cook]

Smitty Two <prestwhich@earthlink.net> wrote in message
newsrestwhich-2DAF00.07572313052009@newsfarm.iad.highwinds-media.com...

In article <guemd9$1pv$1@news.motzarella.org>,
"N_Cook" <diverse@tcp.co.uk> wrote:

Or presumably plastic knobs also. Owner of Roland piano had a flight
case
made up for it but he did not allow for the knobs. Hacking into the foam
still leaves the knobs pressed against the outside face of the case.
Replacement knobs not possible as would have to be only 8mm high and do
not
exist that shallow.

How to mount in a lathe to cut down ? Cutting tool sufficiently sharp
but
grip the knob in the jaws too tight and the Al of the knob deforms. Too
loose and it slips of course. Jubilee / hose clip around it and not
enough
space between the jaws for the clip boss.
Nylon cable tie worked well enough to form a neat level line to then
hand
hack saw / and bench-grind down to, but not enough force to fully lathe
cut
the height down. Anyone been here before/ know the secret? for the next
time
I'm confronted with the same predicament.
Perhaps an engineering solution, if an oft repeated job. A 5 to 10 mm
thick
anulus of aluminium , with a radial cut and dimensions so a tight and
rigidly held grip in the lathe-juck.
Perhaps a smaller ground down boss structure of a jubille clip , for a
more
general work-around, replacing the tightener with an Allen key grub
screw
(hex set screw) to reduce the size.



Your lathe needs collets instead of a chuck.

Unfortunately that would require a complete range of sizes, for future
eventualities.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

 

[Smitty Two]

In article <guencm$abg$1@news.motzarella.org>,
"N_Cook" <diverse@tcp.co.uk> wrote:

Your lathe needs collets instead of a chuck.

Unfortunately that would require a complete range of sizes, for future
eventualities.

Yes. Collectively, those accessory items are called "tooling." Machine
tools without tooling are useless. But, assuming your lathe is equipped
to use collets, you can buy them one at a time as the need arises.

 

[Jim Yanik]

"N_Cook" <diverse@tcp.co.uk> wrote in
news:guemd9$1pv$1@news.motzarella.org:

Or presumably plastic knobs also. Owner of Roland piano had a flight
case made up for it but he did not allow for the knobs. Hacking into
the foam still leaves the knobs pressed against the outside face of
the case. Replacement knobs not possible as would have to be only 8mm
high and do not exist that shallow.

How to mount in a lathe to cut down ? Cutting tool sufficiently sharp
but grip the knob in the jaws too tight and the Al of the knob
deforms. Too loose and it slips of course. Jubilee / hose clip around
it and not enough space between the jaws for the clip boss.
Nylon cable tie worked well enough to form a neat level line to then
hand hack saw / and bench-grind down to, but not enough force to fully
lathe cut the height down. Anyone been here before/ know the secret?
for the next time I'm confronted with the same predicament.
Perhaps an engineering solution, if an oft repeated job. A 5 to 10 mm
thick anulus of aluminium , with a radial cut and dimensions so a
tight and rigidly held grip in the lathe-juck.
Perhaps a smaller ground down boss structure of a jubille clip , for a
more general work-around, replacing the tightener with an Allen key
grub screw (hex set screw) to reduce the size.


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

you need some sort of expanding internal shaft to hold the knob from the
inside. Lathes do have chucks designed to do that(hold from the inside),but
not for the small diameters of a knob's shaft.

I'm thinking of a hollow shaft with the end cross-slotted and a coaxial
screw that pulls in a cone to expand the slotted end,which gets inserted
into the knob's bore.

--
Jim Yanik
jyanik
at
kua.net

 

[Smitty Two]

In article <Xns9C0A7CDADB58Cjyanikkuanet@74.209.136.87>,
Jim Yanik <jyanik@abuse.gov> wrote:

you need some sort of expanding internal shaft to hold the knob from the
inside. Lathes do have chucks designed to do that(hold from the inside),but
not for the small diameters of a knob's shaft.

I'm thinking of a hollow shaft with the end cross-slotted and a coaxial
screw that pulls in a cone to expand the slotted end,which gets inserted
into the knob's bore.

And again, you're describing a collet, this time an internal collet.

 

[N_Cook]

Jim Yanik <jyanik@abuse.gov> wrote in message
news:Xns9C0A7CDADB58Cjyanikkuanet@74.209.136.87...

"N_Cook" <diverse@tcp.co.uk> wrote in
news:guemd9$1pv$1@news.motzarella.org:

Or presumably plastic knobs also. Owner of Roland piano had a flight
case made up for it but he did not allow for the knobs. Hacking into
the foam still leaves the knobs pressed against the outside face of
the case. Replacement knobs not possible as would have to be only 8mm
high and do not exist that shallow.

How to mount in a lathe to cut down ? Cutting tool sufficiently sharp
but grip the knob in the jaws too tight and the Al of the knob
deforms. Too loose and it slips of course. Jubilee / hose clip around
it and not enough space between the jaws for the clip boss.
Nylon cable tie worked well enough to form a neat level line to then
hand hack saw / and bench-grind down to, but not enough force to fully
lathe cut the height down. Anyone been here before/ know the secret?
for the next time I'm confronted with the same predicament.
Perhaps an engineering solution, if an oft repeated job. A 5 to 10 mm
thick anulus of aluminium , with a radial cut and dimensions so a
tight and rigidly held grip in the lathe-juck.
Perhaps a smaller ground down boss structure of a jubille clip , for a
more general work-around, replacing the tightener with an Allen key
grub screw (hex set screw) to reduce the size.


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/




you need some sort of expanding internal shaft to hold the knob from the
inside. Lathes do have chucks designed to do that(hold from the
inside),but
not for the small diameters of a knob's shaft.

I'm thinking of a hollow shaft with the end cross-slotted and a coaxial
screw that pulls in a cone to expand the slotted end,which gets inserted
into the knob's bore.

--
Jim Yanik
jyanik
at
kua.net

Replacing Jubilee clip screw with a grub screw, no goer, all threads are too
fine and needs a bearing surfce flange.
But cutting the bolt-head off the existing one, leaving the flange and
cutting some off the other end and cutting a slot across for turning with a
screwdriver. Cut off the retaining tang parts of the clip to shorten (no
longer holds the bolt in place) should work down to about 12mm diameter knob
, holding securely in a standard 3-jaw

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

 

[N_Cook]

hr(bob) hofmann@att.net <hrhofmann@att.net> wrote in message
news:b0d12c25-43a1-4fe0-98ac-ee3794cb04fb@r34g2000vba.googlegroups.com...
On May 13, 9:44 am, "N_Cook" <dive...@tcp.co.uk> wrote:

Or presumably plastic knobs also. Owner of Roland piano had a flight case
made up for it but he did not allow for the knobs. Hacking into the foam
still leaves the knobs pressed against the outside face of the case.
Replacement knobs not possible as would have to be only 8mm high and do
not
exist that shallow.

How to mount in a lathe to cut down ? Cutting tool sufficiently sharp but
grip the knob in the jaws too tight and the Al of the knob deforms. Too
loose and it slips of course. Jubilee / hose clip around it and not enough
space between the jaws for the clip boss.
Nylon cable tie worked well enough to form a neat level line to then hand
hack saw / and bench-grind down to, but not enough force to fully lathe
cut
the height down. Anyone been here before/ know the secret? for the next
time
I'm confronted with the same predicament.
Perhaps an engineering solution, if an oft repeated job. A 5 to 10 mm
thick
anulus of aluminium , with a radial cut and dimensions so a tight and
rigidly held grip in the lathe-juck.
Perhaps a smaller ground down boss structure of a jubille clip , for a
more
general work-around, replacing the tightener with an Allen key grub screw
(hex set screw) to reduce the size.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list
onhttp://home.graffiti.net/diverse:graffiti.net/

Why not just take the knobs off and put in a separate bag when
shipping in the container????

*****

I doubt it flies anywhere, used for gig to gig transportation. He had been
doing that , I think, but was getting tired of doing it. And each time it
would remind him of his mis-measuring.


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

 

[hr(bob) hofmann@att.net]

On May 13, 9:44 am, "N_Cook" <dive...@tcp.co.uk> wrote:

Or presumably plastic knobs also. Owner of Roland piano had a flight case
made up for it but he did not allow for the knobs. Hacking into the foam
still leaves the knobs pressed against the outside face of the case.
Replacement knobs not possible as would have to be only 8mm high and do not
exist that shallow.

How to mount in a lathe to cut down ? Cutting tool sufficiently sharp but
grip the knob in the jaws too tight and the Al of the knob deforms. Too
loose and it slips of course.  Jubilee / hose clip around it and not enough
space between the jaws for the clip boss.
Nylon cable tie worked well enough to form a neat level line to then hand
hack saw / and bench-grind down to, but not enough force to fully lathe cut
the height down. Anyone been here before/ know the secret? for the next time
I'm confronted with the same predicament.
Perhaps an engineering solution, if an oft repeated job. A 5 to 10 mm thick
anulus of aluminium , with a radial cut and dimensions so a tight and
rigidly held grip in the lathe-juck.
Perhaps a smaller ground down boss structure of a jubille clip , for a more
general work-around, replacing the tightener with an Allen key grub screw
(hex set screw) to reduce the size.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list onhttp://home.graffiti.net/diverse:graffiti.net/

Why not just take the knobs off and put in a separate bag when
shipping in the container????

 

[Ross Herbert]

On Wed, 13 May 2009 15:44:52 +0100, "N_Cook" <diverse@tcp.co.uk> wrote:

:Or presumably plastic knobs also. Owner of Roland piano had a flight case
:made up for it but he did not allow for the knobs. Hacking into the foam
:still leaves the knobs pressed against the outside face of the case.
:Replacement knobs not possible as would have to be only 8mm high and do not
:exist that shallow.
:
:How to mount in a lathe to cut down ? Cutting tool sufficiently sharp but
:grip the knob in the jaws too tight and the Al of the knob deforms. Too
:loose and it slips of course. Jubilee / hose clip around it and not enough
:space between the jaws for the clip boss.
:Nylon cable tie worked well enough to form a neat level line to then hand
:hack saw / and bench-grind down to, but not enough force to fully lathe cut
:the height down. Anyone been here before/ know the secret? for the next time
:I'm confronted with the same predicament.
erhaps an engineering solution, if an oft repeated job. A 5 to 10 mm thick
:anulus of aluminium , with a radial cut and dimensions so a tight and
:rigidly held grip in the lathe-juck.
erhaps a smaller ground down boss structure of a jubille clip , for a more
:general work-around, replacing the tightener with an Allen key grub screw
hex set screw) to reduce the size.

I would not recommend using a fuck-up to fix a fuck-up... what happens when you
have to replace a knob down the track? - more lathe work...

I would go back to the case manf if possible and get a deeper lid made and
fitted - surely that is the best solution and you'll waste less time in the long
run.

 

[Spehro Pefhany]

On 13 May 2009 16:16:13 GMT, the renowned Jim Yanik <jyanik@abuse.gov>
wrote:

"N_Cook" <diverse@tcp.co.uk> wrote in
news:guemd9$1pv$1@news.motzarella.org:

Or presumably plastic knobs also. Owner of Roland piano had a flight
case made up for it but he did not allow for the knobs. Hacking into
the foam still leaves the knobs pressed against the outside face of
the case. Replacement knobs not possible as would have to be only 8mm
high and do not exist that shallow.

How to mount in a lathe to cut down ? Cutting tool sufficiently sharp
but grip the knob in the jaws too tight and the Al of the knob
deforms. Too loose and it slips of course. Jubilee / hose clip around
it and not enough space between the jaws for the clip boss.
Nylon cable tie worked well enough to form a neat level line to then
hand hack saw / and bench-grind down to, but not enough force to fully
lathe cut the height down. Anyone been here before/ know the secret?
for the next time I'm confronted with the same predicament.
Perhaps an engineering solution, if an oft repeated job. A 5 to 10 mm
thick anulus of aluminium , with a radial cut and dimensions so a
tight and rigidly held grip in the lathe-juck.
Perhaps a smaller ground down boss structure of a jubille clip , for a
more general work-around, replacing the tightener with an Allen key
grub screw (hex set screw) to reduce the size.


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/




you need some sort of expanding internal shaft to hold the knob from the
inside. Lathes do have chucks designed to do that(hold from the inside),but
not for the small diameters of a knob's shaft.

I'm thinking of a hollow shaft with the end cross-slotted and a coaxial
screw that pulls in a cone to expand the slotted end,which gets inserted
into the knob's bore.

That's called an "expanding arbor". For example:

http://homemetalshopclub.org/news/apr97/apr97.html



Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

 

[Meat Plow]

On Wed, 13 May 2009 15:44:52 +0100, "N_Cook" <diverse@tcp.co.uk>wrote:

Or presumably plastic knobs also. Owner of Roland piano had a flight case
made up for it but he did not allow for the knobs. Hacking into the foam
still leaves the knobs pressed against the outside face of the case.
Replacement knobs not possible as would have to be only 8mm high and do not
exist that shallow.

How to mount in a lathe to cut down ? Cutting tool sufficiently sharp but
grip the knob in the jaws too tight and the Al of the knob deforms. Too
loose and it slips of course. Jubilee / hose clip around it and not enough
space between the jaws for the clip boss.
Nylon cable tie worked well enough to form a neat level line to then hand
hack saw / and bench-grind down to, but not enough force to fully lathe cut
the height down. Anyone been here before/ know the secret? for the next time
I'm confronted with the same predicament.
Perhaps an engineering solution, if an oft repeated job. A 5 to 10 mm thick
anulus of aluminium , with a radial cut and dimensions so a tight and
rigidly held grip in the lathe-juck.
Perhaps a smaller ground down boss structure of a jubille clip , for a more
general work-around, replacing the tightener with an Allen key grub screw
(hex set screw) to reduce the size.

Remove knobs before placing in case? Remake the case cover this time
allowing for the knobs? To me, cutting the knobs is a hack job and I
sure the hell wouldn't advise it.

 

[David Nebenzahl]

On 5/13/2009 7:01 PM Ross Herbert spake thus:

On Wed, 13 May 2009 15:44:52 +0100, "N_Cook" <diverse@tcp.co.uk> wrote:

Or presumably plastic knobs also. Owner of Roland piano had a
flight case made up for it but he did not allow for the knobs.
Hacking into the foam still leaves the knobs pressed against the
outside face of the case. Replacement knobs not possible as would
have to be only 8mm high and do not exist that shallow.

I would not recommend using a fuck-up to fix a fuck-up... what
happens when you have to replace a knob down the track? - more lathe
work...

Ah, but that's "N_Cook"'s preferred way of doing things, dontcha know.


--
Found--the gene that causes belief in genetic determinism

 

[Bob Larter]

N_Cook wrote:

Or presumably plastic knobs also. Owner of Roland piano had a flight case
made up for it but he did not allow for the knobs. Hacking into the foam
still leaves the knobs pressed against the outside face of the case.
Replacement knobs not possible as would have to be only 8mm high and do not
exist that shallow.

How to mount in a lathe to cut down ? Cutting tool sufficiently sharp but
grip the knob in the jaws too tight and the Al of the knob deforms.

I'd put a couple of layers of electrical tape around it & just throw it
in the chuck. The worst that could happen is that the chuck could ding
the skirt of the knob, or it could *spung!* out of the chuck.



--
W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
---^----^---------------------------------------------------------------

 

[ian field]

"N_Cook" <diverse@tcp.co.uk> wrote in message
news:guet84$rer$1@news.motzarella.org...

hr(bob) hofmann@att.net <hrhofmann@att.net> wrote in message
news:b0d12c25-43a1-4fe0-98ac-ee3794cb04fb@r34g2000vba.googlegroups.com...
On May 13, 9:44 am, "N_Cook" <dive...@tcp.co.uk> wrote:
Or presumably plastic knobs also. Owner of Roland piano had a flight case
made up for it but he did not allow for the knobs. Hacking into the foam
still leaves the knobs pressed against the outside face of the case.
Replacement knobs not possible as would have to be only 8mm high and do
not
exist that shallow.

How to mount in a lathe to cut down ? Cutting tool sufficiently sharp but
grip the knob in the jaws too tight and the Al of the knob deforms. Too
loose and it slips of course. Jubilee / hose clip around it and not
enough
space between the jaws for the clip boss.
Nylon cable tie worked well enough to form a neat level line to then hand
hack saw / and bench-grind down to, but not enough force to fully lathe
cut
the height down. Anyone been here before/ know the secret? for the next
time
I'm confronted with the same predicament.
Perhaps an engineering solution, if an oft repeated job. A 5 to 10 mm
thick
anulus of aluminium , with a radial cut and dimensions so a tight and
rigidly held grip in the lathe-juck.
Perhaps a smaller ground down boss structure of a jubille clip , for a
more
general work-around, replacing the tightener with an Allen key grub screw
(hex set screw) to reduce the size.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list
onhttp://home.graffiti.net/diverse:graffiti.net/

Why not just take the knobs off and put in a separate bag when
shipping in the container????

*****

I doubt it flies anywhere, used for gig to gig transportation. He had been
doing that , I think, but was getting tired of doing it. And each time it
would remind him of his mis-measuring.

Buy a Ł1.29p potentiometer with a long shaft spindle (they're sold like that
so they can be cut down to length as required) - cut the spindle to normal
length and use the offcut to fit the knob to a lathe chuck.

 

[ian field]

"David Nebenzahl" <nobody@but.us.chickens> wrote in message
news:4a0c67bd$0$2707$822641b3@news.adtechcomputers.com...

On 5/13/2009 7:01 PM Ross Herbert spake thus:

On Wed, 13 May 2009 15:44:52 +0100, "N_Cook" <diverse@tcp.co.uk> wrote:

Or presumably plastic knobs also. Owner of Roland piano had a
flight case made up for it but he did not allow for the knobs.
Hacking into the foam still leaves the knobs pressed against the
outside face of the case. Replacement knobs not possible as would
have to be only 8mm high and do not exist that shallow.

I would not recommend using a fuck-up to fix a fuck-up... what happens
when you have to replace a knob down the track? - more lathe
work...

Ah, but that's "N_Cook"'s preferred way of doing things, dontcha know.

Cut holes in the case to clear the knobs and stick plywood patches over the
holes - if the knobs foul the patches, hole them and stick a second layer of
patches over that and so on.....................

 

[ian field]

"Bob Larter" <bobbylarter@gmail.com> wrote in message
news:gui5ao$5vb$3@blackhelicopter.databasix.com...

N_Cook wrote:
Or presumably plastic knobs also. Owner of Roland piano had a flight case
made up for it but he did not allow for the knobs. Hacking into the foam
still leaves the knobs pressed against the outside face of the case.
Replacement knobs not possible as would have to be only 8mm high and do
not
exist that shallow.

How to mount in a lathe to cut down ? Cutting tool sufficiently sharp but
grip the knob in the jaws too tight and the Al of the knob deforms.

I'd put a couple of layers of electrical tape around it & just throw it in
the chuck. The worst that could happen is that the chuck could ding the
skirt of the knob, or it could *spung!* out of the chuck.

It would be easier to file the top of the knob down than fit it in a lathe
chuck, its easy to secure the knob in a vice, just buy a potentiometer with
a long spindle and cut it down to normal length - the offcut can be inserted
in the knob and clamped in the vice.

 

[Bob Larter]

ian field wrote:

"N_Cook" <diverse@tcp.co.uk> wrote in message
news:guet84$rer$1@news.motzarella.org...
hr(bob) hofmann@att.net <hrhofmann@att.net> wrote in message
news:b0d12c25-43a1-4fe0-98ac-ee3794cb04fb@r34g2000vba.googlegroups.com...
On May 13, 9:44 am, "N_Cook" <dive...@tcp.co.uk> wrote:
Or presumably plastic knobs also. Owner of Roland piano had a flight case
made up for it but he did not allow for the knobs. Hacking into the foam
still leaves the knobs pressed against the outside face of the case.
Replacement knobs not possible as would have to be only 8mm high and do
not
exist that shallow.

How to mount in a lathe to cut down ? Cutting tool sufficiently sharp but
grip the knob in the jaws too tight and the Al of the knob deforms. Too
loose and it slips of course. Jubilee / hose clip around it and not
enough
space between the jaws for the clip boss.
Nylon cable tie worked well enough to form a neat level line to then hand
hack saw / and bench-grind down to, but not enough force to fully lathe
cut
the height down. Anyone been here before/ know the secret? for the next
time
I'm confronted with the same predicament.
Perhaps an engineering solution, if an oft repeated job. A 5 to 10 mm
thick
anulus of aluminium , with a radial cut and dimensions so a tight and
rigidly held grip in the lathe-juck.
Perhaps a smaller ground down boss structure of a jubille clip , for a
more
general work-around, replacing the tightener with an Allen key grub screw
(hex set screw) to reduce the size.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list
onhttp://home.graffiti.net/diverse:graffiti.net/

Why not just take the knobs off and put in a separate bag when
shipping in the container????

*****

I doubt it flies anywhere, used for gig to gig transportation. He had been
doing that , I think, but was getting tired of doing it. And each time it
would remind him of his mis-measuring.


Buy a Ł1.29p potentiometer with a long shaft spindle (they're sold like that
so they can be cut down to length as required) - cut the spindle to normal
length and use the offcut to fit the knob to a lathe chuck.

Good idea!

--
W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
---^----^---------------------------------------------------------------

 

[Bob Larter]

ian field wrote:

"Bob Larter" <bobbylarter@gmail.com> wrote in message
news:gui5ao$5vb$3@blackhelicopter.databasix.com...
N_Cook wrote:
Or presumably plastic knobs also. Owner of Roland piano had a flight case
made up for it but he did not allow for the knobs. Hacking into the foam
still leaves the knobs pressed against the outside face of the case.
Replacement knobs not possible as would have to be only 8mm high and do
not
exist that shallow.

How to mount in a lathe to cut down ? Cutting tool sufficiently sharp but
grip the knob in the jaws too tight and the Al of the knob deforms.
I'd put a couple of layers of electrical tape around it & just throw it in
the chuck. The worst that could happen is that the chuck could ding the
skirt of the knob, or it could *spung!* out of the chuck.


It would be easier to file the top of the knob down than fit it in a lathe
chuck,

It'd all depend on how much material he needs to take off, & filing
doesn't leave a very nice finish.

its easy to secure the knob in a vice, just buy a potentiometer with
a long spindle and cut it down to normal length - the offcut can be inserted
in the knob and clamped in the vice.

That'd depend on whether it's a 'D' section, or just a rod.

--
W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
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